@misc{Jadczyk_Piotr_Foraging,
 author={Jadczyk, Piotr},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng ; pol},
 type={artykuł},
 title={Foraging strategies of wintering corvids Corvidae in suburban agrocenoses},
 keywords={rook Corvus frugilegus, jackdaw Corvus monedula, hooded crow Corvus cornix, bird wintering, Silesian avifauna},
}